On the Penetration of Large-scale Flows into Stellar Radiative Zones [PDF]
Astrophysical JournalThe propagation of meridional circulation below the base of the convection zone (CZ) of low-mass stars may play a crucial role in the transport of angular momentum and also significantly contribute to the transport of chemical species and magnetic fields
Lydia Korre, N. Featherstone
semanticscholar +1 more source
H ingestion into He-burning convection zones in super-AGB stellar models as a potential site for intermediate neutron-density nucleosynthesis [PDF]
, 2015 We investigate the evolution of super-AGB (SAGB) thermal pulse (TP) stars for a range of metallicities (Z) and explore the effect of convective boundary mixing (CBM).
S. Jones +10 more
semanticscholar +1 more source
Convective Boundary Mixing in Main-Sequence Stars: Theory and Empirical Constraints
Galaxies, 2023 The convective envelopes of solar-type stars and the convective cores of intermediate- and high-mass stars share boundaries with stable radiative zones.
Evan H. Anders, May G. Pedersen
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An attempt to calibrate core overshooting using the seismic properties of low-mass stars
EPJ Web of Conferences, 2015 The sizes of stellar convective cores remain uncertain because of our poor understanding of the interface between convective and radiative zones. The very high precision of the seismic data provided by the CoRoT and Kepler space missions offers a great ...
Deheuvels S. +7 more
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Asteroseismology of Massive Stars : Some Words of Caution [PDF]
, 2014 Although playing a key role in the understanding of the supernova phenomenon, the evolution of massive stars still suffers from uncertainties in their structure, even during their "quiet" main sequence phase and later on during their subgiant and helium ...
Gabriel, M. +5 more
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Shear mixing in stellar radiative zones I. Effect of thermal diffusion and chemical stratification [PDF]
, 2014 Context. Turbulent transport of chemical elements in radiative zones of stars is considered in current stellar evolution codes thanks to phenomenologically derived di usion coe cients.
V. Prat, F. Lignieres
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Two-dimensional simulations of internal gravity waves in the radiation zones of intermediate-mass stars [PDF]
, 2020 Intermediate-mass main sequence stars have large radiative envelopes overlying convective cores. This configuration allows internal gravity waves (IGWs) generated at the convective-radiative interface to propagate towards the stellar surface.
R. Ratnasingam, P. Edelmann, T. Rogers
semanticscholar +1 more source
Low-frequency Internal Gravity Waves Are Pseudo-incompressible
The Astrophysical Journal, 2023 Starting from the fully compressible fluid equations in a plane-parallel atmosphere, we demonstrate that linear internal gravity waves are naturally pseudo-incompressible in the limit that the wave frequency ω is much less than that of surface gravity ...
Bradley W. Hindman, Keith Julien
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Angular Momentum Transport via Internal Gravity Waves in Evolving Stars [PDF]
, 2014 Recent asteroseismic advances have allowed for direct measurements of the internal rotation rates of many sub-giant and red giant stars. Unlike the nearly rigidly rotating Sun, these evolved stars contain radiative cores that spin faster than their ...
Brown, Ben +3 more
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The Astrophysical Journal, 2023 Many of the M-dwarf stars, though they are tiny and dim, are observed to possess strong surface magnetic fields and exhibit remarkably intense flaring. Such magnetism may severely impact habitability on the exoplanets now discovered nearby. The origin of
Connor P. Bice, Juri Toomre
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